Error in the time estimation of a slave clock

Hi,

I am trying to minimize the error between a Master and a Slave but it is always at least +50ns. Can be this error decreased to zero somehow?

I am using the PerfectScheduleClock for both, Master and Slave. I set the parameters as following:

**.Slave.**.Clock.BeginScaledTime = 0ms
#**.Slave.**.Clock.InitialPhaseNom = 0
**.Slave.**.Clock.TickLenNom = 10ns
**.Slave.**.ClockType = "PerfectScheduleClock"

Could the error be related with the filtering for the clock?

Thanks in advance.

Best Regards,

Jordi